Mycorrhiza does not help the host plant in
1. enhancing its phosphorus uptake capacity
2. increasing its tolerance to drought
3. enhancing its resistance to root pathogens
4. increasing its resistance to insects
Which one of the following is not a nitrogen-fixing organism?
1. Anabaena
2. Nostoc
3. Azotobacter
4. Pseudomonas
Match the items in column "A' and coloum 'B' and choose the correct answer
Column I | Column II |
A. Lady bird | (i) Methano bacterium |
B. Mycorrhiza | (ii) Trichoderma |
C. Biological control | (iii) Aphids |
D. Biogas | (iv) Glomus |
The correct answer is
A | B | C | D | |
(1) | ii | iv | iii | i |
(2) | iii | iv | ii | i |
(3) | iv | i | ii | iii |
(4) | iii | ii | i | iv |